Hydrochloric Acid → HCID 67682437, compound

Participants

Reaction Steps

Tert-butyl (R)-2-((2S,4S)-2-(5-(4′-(2-((2S,4S)-1-((S)-2-(methoxycarbonylamino)-3-methylbutanoyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)biphenyl-4-yl)-1H-imidazol-2-yl)-4-methylpyrrolidin-1-yl)-2-oxo-1-phenylethylcarbamate (296 mg, 0.33 mmol) was dissolved in DCM (4 mL), MeOH (1 mL) and HCl (4 M in dioxane, 1 mL) was added. The reaction mixture was stirred over night and then concentrated under reduced pressure. The crude residue was treated with cyclopropanecarboxylic acid (38 μL, 0.28 mmol), COMU (162 mg, 0.34 mmol) and DMF (4 mL), then DIPEA (0.29 mL, 1.65 mmol) was added dropwise. After 30 min, the mixture was diluted with 10% MeOH/EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The organics were dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by HPLC to afford methyl (S)-1-((2S,4S)-2-(5-(4′-(2-((2S,4S)-1-((R)-2-(cyclopropanecarboxamido)-2-phenylacetyl)-4-methylpyrrolidin-2-yl)-1H-imidazol-5-yl)biphenyl-4-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl)-3-methyl-1-oxobutan-2-ylcarbamate (68 mg, 24%). LCMS-ESI+: calculated for C48H56N8O6: 840.43; observed [M+1]+: 842.14.

Provenance & Evidence